Reality
Make your own luck.
I don't believe this to be true but I do seriously hope there is a sane middleman somewhere in their chain of command who could refuse to launch nukes if Putin ordered it .
Hopefully even his own soldiers would realize how stupid that would be if the time came
I mean...we've been on borrowed time since these weapons were developed. There's a compelling theory that we don't have contact with alien life because species develop weapons that end their worlds before they develop the technology for long distance space travel. The great filter.
If you want a sense of just how close nuclear war has been, check this out: List of nuclear close calls - Wikipedia.
At the height of the Cuban Missile Crisis, Soviet patrol submarine B-59 almost launched a nuclear-armed torpedo while under harassment by American naval forces. One of several vessels surrounded by American destroyers near Cuba, B-59 dove to avoid detection and was unable to communicate with Moscow for a number of days.[14] USS Beale began dropping practice depth charges to signal B-59 to surface; however the captain of the Soviet submarine and its zampolit took these to be real depth charges.[15] With low batteries affecting the submarine's life support systems and unable to make contact with Moscow, the commander of B-59 feared that war had already begun and ordered the use of a 10-kiloton nuclear torpedo against the American fleet. The zampolit agreed, but the chief of staff of the flotilla (second in command of the flotilla) Vasily Arkhipov refused permission to launch. He convinced the captain to calm down, surface, and make contact with Moscow for new orders.[16][17]